I have mp4 SBS 180 VR videos made for Oculus Rift. I'd like to crop the videos a little (simulate the zoom) and then downscale to "cardboard" resolution so it would be smoothly playable on mobile devices.
Some mobile players have already zoom function built in, but this should work as a workaround for keeping the picture sharp (working down from the big resolution) at the expanse of FOV.
Pretty soon I realized I can't simply crop the whole video. I have to crop both sides separately and then join them together as they were.
Could you point me to video-editing software (preferably free and fast to learn) that would allow me to do such thing?